Abrading-machine.



nani-EL' Wfnorrrrr, or Mannen, nassnnnsnrrs.

ABBADINfG-MACHINE.'

` i. peeiaton of Letters Patent.

Patented Mar. 1s, 1913- Appiioann'me Ima 2,1912. serial nu. esami.,

Y To all lwhom t may ooncem; l Be it lnown tht I, DANIEL W. Morrrrr, residing at Malden, in the county of Middle, f sex and State of Massachusetts have in- Y vented certain Improvements in Abrading- Machines, of which the following is a speciication.

'lt is a common practice to OPER Sealed en;

velops to secure the con-tained letter by 'l0 means of a metal devicewhich is inserted into the envelop and shea-ring the edge ofthe which with a llarge amount of mail same matter is `a slow methodV and attended with u certain disadvantages such as the liability l0 of cutting the contents.

\ The invention about to be described'concerns means for opening a number of sealed envelops at the same time in an expeditious and safe manner, and'consists of arevolving abrading Wheel within a casing Whose up?" per surface is accessible through an opening in the casing, combined with a feeding and guiding, attachment whereby a plurality of;

sealed envelops Vmay be guided over theface of 'the abrading Wheel and' their *edges ground away so thattlle contentsmaybe readily removed, the opened envelope heilig' passed along into a proper receptale. All of which I Will now proceed todesc'ribe Land claims.

ilOf the accompanying dra-Wings whicl il v tion Figure 1 is a plan view Ioflone of'my invention. Fig.` 2 is a 13.121,11.v i e ,'w`` of c), m i

another form of the saine. {Figoi isa horijj zontal sectional vienrv `of th previous and Fig. 4 is a section on line av m of Fig. 3.

n which may have open sidesviffpreferred;2

is an electric motor havingleads` w w toa source of current from which extends the shaft 3 having a bearing lOinfthe end of the casing, and It is an abrading wheel prefer? of its upper surface.

Referring to Fig. 1, C C2 are guidespiv- 5 oted respectively at 12 12, the lower one C2 has a limiting stop G3 -While the upper one'v` is free to be moved upward as indicated vin dotted lines. When-a number of envelope are to be treated they are gathered in a bunch as indicated by dotted lines e and are point out in particular in theV appended.

ustrate and form a part of .the speci f ic 1 In the ldrawings a is a table .or'casingv ably with a carborundum fsurface, whoseg upper periphery extends throughan opening..i 5 in thetop of the casing kon about the level.

placed between the 'guides C C? and clamped lightly and pushed between the` guides toward the wheel 4l ina direction parallel with its axis over the opening 5, and as the Wheel is supposed to be in motion the lower edges of the envelopsareground olf from one end to the other., so that the contents may be extractedreadily.` Care of course must be takennot to presstheenvelops too hard upon the Wheel so that onlyvtheir edges are abra-ded and evenly` fromu one end to the other, I nd that this type 'of `Inac'zhiue Works Wellybut thatfthe design represented by the otherV figures is quicker and" doeSnqt require so much care in operation.

In the Figs. 2, 3. and t there are. fixed,

guides?, 7 on each side of the opening 5; y and 6, 6, 6, 6 and 6l 6a are rotating guides onthe ends of short spindles Whh extend into the'mterior of the easing and terminate with bevel gears` 8, which mesh with the gears 9 on rtheshaft 8, these guides 6 are preferably o fiexihle rubber.; Aand between the vguides H are other fixed guides 7. To the .right of Fig. Q is a xed'standard i3, and 1 4 .is an upright backing having the perforated lugs 15, 15 adapted to slide back and forth on screws, as fshown, and* between the standard 13. andthe backing 14 are springs s s, to force 'them apart, ``When a bunch of envelop's are to'beoperatedon the backing 14 is forced againstthe springs s s and they are inserted between Yit and the 'opposite rotating guides @16g/by the movementof which they'are car. lried.horizontallyY` along between the otherk rotating gudes; 6, a-DdG* Stand over the abrad'gwheel 4,' and theug'outward, theoperaftorswhand resting lightly 'upon them toV 'keep them down and together so that they Will'allY move together. By this design a -continuousoperation may be madefas fast-` as one bunch isv carried along beyond the backing 14z1n tl1erv can be started. Byk a little practice the operator. will'determine the numberof envelope that can be carried amount ofirnanipulation required: I claim as `my4 invention :4-A 1.-;A maohineof the character described comprising a table provided with an opening, Aan abrading WheelV rotatably mounted opposite saidV opening, and means for guiding apackage of envelops across said opening,-said guiding means including spaced apart relatively Stationary and yieldable `10o alongby abe rotating Wheels 6, andthe members arranged parallel with the axis of said wheel and between which the envelope of each package are stacked.

2. A machine of the character described comprising a table rovided with an' open. ing, an abrading W eel rotatabl mounted opposite said opening, xed gui es secured l to said table, and rotatable guides coperating therewith, said guides being arranged in lines parallel with the axis of said roller. 3. A machine of the'character described comprising a table provided with an ,open-v ing, an abrading wheel rotatably mounted opposite said opening, and envelop guiding means comprising a row of alternating fixed and rotating guides, and a second row pf rotating guides coperating therewith.

4. A machine of the character described comprising a table 'provided -with an opening, an abrading Wheelv rotatably "mounted -opposite said opening, fixed guides secured to said table, rotatable guides coperating therewith, said guidesbeing arranged in lines parallel with the axis of said roller, and means whereby'za package of envelops may be started between said guides.

5. A machine 'of vthe character described comprising a table rovided with an opening, an abrading w eel rotatably mounted opposite said opening, and envelop guidin means comprismg a row of alternatingiixe lstarted between sa1d and rotating guides, a second row of rotating guides coperating therewith and mea-ns whereby a package of envel uides. 6. A machine of t e character described ops may bc comprising'a table rovided with an opening, an abrading w eel rotatably mounted opposite said opening, and envelop guidingv means comprising a row of alternating fixed and rotating guides, a second row of rotatlng guides coperating'therewith, and a spring' pressed plate coperating with the first men-.

tioned row of guides.

7. A machine of the character described comprising a table provided with -an opening,an abrading wheel rotatablymounted .opposite said opening, fixed guides secured to said table, and rotatable guides coperating therewith, said guides being arranged in lines parallel with the axis of said roller, and a spring 'ressed plate coperating with said fixed guides.

In testimony whereof, I have signed my name to this specication in the presence of two subscribing witnesses, this. 20th day of- February 1912.

DANIEL W. M OFFITT.

GEO. WILLIs Pinnen, 7 L. A. 

